Diterpenóides com esqueleto cleistantano de Vellozia aff. carunculares martius ex seubert (Velloziaceae)

Gilson Cruz da Silva, Ligia Maria Marino Valente, Maria Lucia Patitucci, Angelo da Cunha Pinto, Nanuza Luíza de Menezes
2001 Química Nova  
Recebido em 24/8/00; aceito em 29/11/00 CLEISTANTHANE DITERPENOIDS FROM VELLOZIA AFF. CARUNCULARES MARTIUS EX SEUBERT (VELLOZIACEAE). From the hexane extract of leaves, stem and roots, of Vellozia aff. carunculares, fourteen cleistanthane diterpenoids were detected by HRGC-MS, through the analysis of their fragmentation patterns. Comparison of their MS spectra with those of authentic standards previously isolated from other species of the family Velloziaceae allowed the identification, with a
more » ... ification, with a high degree of confidence, of eigth known cleistanthane diterpenoids. Of these, four were isolated and identified from their MS, IR and 1 H and 13 C NMR spectra, as the known cleistantha-8,11,13-trien-7-one, cleistantha-8,11,13-trien-3,7-dione, cleistantha-1,8,11,13-tetraen-3,7-dione and the first reported 6-α-hydroxycleistantha-8,11,13-trien-7-one. The triterpenoid β-amyrin was also isolated.
doi:10.1590/s0100-40422001000500009 fatcat:s4co4tynvbhoflzlxttn6oioou